在Linux上找到所有已经打开的端口及其对应的进程_tcp6 0 0 127.0.0.1:8081 :::* listen-优快云博客

本文链接：https://blog.youkuaiyun.com/msdnchina/article/details/75271665

本文介绍如何使用netstat命令在Linux服务器上查看所有开放端口及其对应的进程，并通过实例展示了如何定位特定端口的占用情况。

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参考文章:
How to Check for All Open Ports on a Linux Server (文档 ID 1539208.1)

请以root用户执行如下命令,否则对应的进程名可能显示不全

[root@rac2 ~]# netstat -lpntu| grep --color -i -E 'listen|listening'
tcp        0      0 172.17.0.2:50313        0.0.0.0:*               LISTEN      15300/evmd.bin      
tcp        0      0 192.168.100.193:1521    0.0.0.0:*               LISTEN      26870/tnslsnr       
tcp        0      0 192.168.100.192:1521    0.0.0.0:*               LISTEN      16721/tnslsnr       
tcp        0      0 192.168.100.102:1521    0.0.0.0:*               LISTEN      16721/tnslsnr       
tcp        0      0 127.0.0.1:6100          0.0.0.0:*               LISTEN      15470/ons           
tcp        0      0 192.168.122.1:53        0.0.0.0:*               LISTEN      2168/dnsmasq        
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1676/sshd           
tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN      1677/cupsd          
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      2128/master         
tcp        0      0 127.0.0.1:6010          0.0.0.0:*               LISTEN      14194/sshd: root@pt 
tcp        0      0 0.0.0.0:9179            0.0.0.0:*               LISTEN      14861/gpnpd.bin     
tcp        0      0 172.17.0.2:61020        0.0.0.0:*               LISTEN      15095/osysmond.bin  
tcp        0      0 172.17.0.2:61021        0.0.0.0:*               LISTEN      15482/ologgerd      
tcp        0      0 172.17.0.2:48895        0.0.0.0:*               LISTEN      15284/crsd.bin      
tcp        0      0 127.0.0.1:2016          0.0.0.0:*               LISTEN      14837/oraagent.bin  
tcp6       0      0 :::23792                :::*                    LISTEN      1328/java           
tcp6       0      0 ::1:6100                :::*                    LISTEN      15470/ons           
tcp6       0      0 :::22                   :::*                    LISTEN      1676/sshd           
tcp6       0      0 ::1:631                 :::*                    LISTEN      1677/cupsd          
tcp6       0      0 127.0.0.1:8888          :::*                    LISTEN      1328/java ---->>>目的是找出8888端口谁占用了.          
tcp6       0      0 :::6200                 :::*                    LISTEN      15470/ons           
tcp6       0      0 ::1:25                  :::*                    LISTEN      2128/master         
tcp6       0      0 ::1:6010                :::*                    LISTEN      14194/sshd: root@pt 
tcp6       0      0 :::45855                :::*                    LISTEN      31808/ora_d000_orcl 
tcp6       0      0 ::1:2016                :::*                    LISTEN      14837/oraagent.bin  
tcp6       0      0 :::9127                 :::*                    LISTEN      1328/java           
[root@rac2 ~]# ps -ef | grep 1328 ----------->>>找到了进程了.
grid      1328     1  0 Jul11 ?        00:06:41 /u01/app/11.2.0/grid/jdk/bin/java -server -Xcheck:jni -Xms128M -Xmx384M -Djava.awt.headless=true -Ddisable.checkForUpdate=true -Dstdstream.filesize=100 -Dstdstream.filenumber=10 -DTRACING.ENABLED=false -Doracle.wlm.dbwlmlogger.logging.level=INFO -Dport.rmi=23792 -jar /u01/app/11.2.0/grid/oc4j/j2ee/home/oc4j.jar -config /u01/app/11.2.0/grid/oc4j/j2ee/home/OC4J_DBWLM_config/server.xml -out /u01/app/11.2.0/grid/oc4j/j2ee/home/log/oc4j.out -err /u01/app/11.2.0/grid/oc4j/j2ee/home/log/oc4j.err
root     15205 14200  0 09:50 pts/0    00:00:00 grep --color=auto 1328
[root@rac2 ~]#